Decentralised/Sustainable Wastewater Treatment Technologies

The centralised sewage treatment technologies have proven to be expensive, complex and are failing to cater to the total wastewater generated. The untreated/partially treated wastewater makes its way to the water body causing immense degradation of the ecosystem and the environmental health.

Need is for sustainable wastewater treatment technologies - to locally treat the sewage and also reuse/recycle. The decentralised sewage treatment can be both electro-mechanical system that have higher energy requirement or natural systems with less or no energy requirement.

CSE has reviewed and documented select case studies that present innovative, sustainable and affordable ways treating the sewage locally including reuse/recycle. The case studies comprise of the wastewater treatment systems which have been implemented at individual, community/cluster and at municipal level. The case studies documented discuss the principle, salient features, and performance indicators and provide details of individuals or agencies/institutions who have implemented the system

The cost comparison of the natural technologies listed under decentralised sustainable wastewater management practices has been presented in the table here..

	Decentralised wastewater treatment system Lodhi Gardens Rainbow Drive Society, Bangalore Rainbow Drive Society, Bangalore AAETI, Nimli Ganga Prem Hospice, Gohri Maphi Village, Uttrakhand Nehru Garden, Alwar Centre for Science and Environment, New Delhi Aravind Eye Hospital, Pondicherry Kachpura village in Agra Bankers Colony, Bhuj Adarsh College, Kualgaon Badlapur Friends of Camphill, Bangalore BEEDI Workers colony, Kengeri, Bengaluru Nabolok Colony, Khulna, Bangladesh  Decentralised Wastewater Treatment System at Varunalaya, Delhi Jal Board
	Constructed Wetland - Wastewater Treatment system Indian Agriculture Research Institute, Pusa, New Delhi Indian Institute of Technology, Powai, Mumbai
	Faecal Sludge (Septage) Management Faecal Sludge Treatment at Devanahalli Bengaluru
	Soil Biotechnology for Wastewater Treatment Lovegrove pumping station, Mumbai Municipal Corporation Vazir Sultan Tobacco (VST), Hyderabad Soil Biotechnology Treatment at Naval Housing Colony, Mumbai
	Soil scape filter technology Nichrome India Ltd, Shirwal Residential building in Pune
	Ecosanitation : zero discharge toilets Residencial building in Krishna Dham, Aligarh
	Biosanitiser / Eco chip technology Residential building at Salunke Vihar, Pune
	Green Bridge technology Ahar River, Udaipur
	Nualgi technology Madivala Lake, Bangalore Vengayyana Kere, Bangalore
	Bioremediation
	Traditional Wastewater Management Mewat district, Haryana Hauz Khaz Lake, New Delhi Kushak Drain, New Delhi Amarnath shrine, J&K Phalodi, Jodhpur
	Fixed Film Biofilter Technology (FFBT) for wastewater treatment Sangli City, Maharashtra